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Home Q & A Board Science-Related Homework Help Physics
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lesliechen lesliechen
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11 years ago
What is the acceleration due to gravity on a planet that is twice the mass of earth and twice the radius of earth?
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11 years ago
4.9 meters per second squared, or one-half gee.

At twice the radius on a planet of 1 earth mass, acceleration would be 1/4 (inverse square law). But since the planet has twice the mass, that's 2 x 1/4 = 1/2 earth gravity.
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rnhrnh
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11 years ago
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